What is the average life of a gas furnace?

Updated: 9/14/2023
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7y ago

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Average is around 15 years although some may last as much as 20 years. Of course some last as little as 10 years. Usually the first things to fail are the parts associated with the blower. Anything that can wear out the motor quicker will shorten the life of the furnace such as: high humidity, vibration, inconsistent power, power surges, water leakage, very gritty air.

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Q: What is the average life of a gas furnace?
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